diff options
| author |   Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> | 2015-09-28 06:43:12 -0500 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2015-09-29 13:25:33 +0200 |
| commit | da92110dfdfacfdb0e3be06040a14d96c23be5d0 (patch) | |
| tree | ee70ac2c40731ba9c4150df588f7edb57a9080d8 /drivers/edac | |
| parent | EDAC: Don't allow empty DIMM labels (diff) | |
| download | linux-dev-da92110dfdfacfdb0e3be06040a14d96c23be5d0.tar.xz linux-dev-da92110dfdfacfdb0e3be06040a14d96c23be5d0.zip | |
EDAC, amd64_edac: Extend scrub rate support to F15hM60h
The scrub rate control register has moved to function 2 in PCI config
space and is at a different offset on family 0x15, models 0x60 and
later. The minimum recommended scrub rate has also changed. (Refer to
D18F2x1c9_dct[1:0][DramScrub] in Fam15hM60h BKDG).
Adjust set_scrub_rate() and get_scrub_rate() functions to accommodate
this.
Tested on F15hM60h, Fam15h, models 00h-0fh and Fam10h systems.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1443440593-2316-2-git-send-email-Aravind.Gopalakrishnan@amd.com
[ Cleanup conditionals. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/amd64_edac.c | 35 | ||||
| -rw-r--r-- | drivers/edac/amd64_edac.h | 2 |
2 files changed, 27 insertions, 10 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 73aea40a9c89..ca03a736b106 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -173,7 +173,7 @@ static inline int amd64_read_dct_pci_cfg(struct amd64_pvt *pvt, u8 dct, * scan the scrub rate mapping table for a close or matching bandwidth value to * issue. If requested is too big, then use last maximum value found. */ -static int __set_scrub_rate(struct pci_dev *ctl, u32 new_bw, u32 min_rate) +static int __set_scrub_rate(struct amd64_pvt *pvt, u32 new_bw, u32 min_rate) { u32 scrubval; int i; @@ -201,7 +201,14 @@ static int __set_scrub_rate(struct pci_dev *ctl, u32 new_bw, u32 min_rate) scrubval = scrubrates[i].scrubval; - pci_write_bits32(ctl, SCRCTRL, scrubval, 0x001F); + if (pvt->fam == 0x15 && pvt->model == 0x60) { + f15h_select_dct(pvt, 0); + pci_write_bits32(pvt->F2, F15H_M60H_SCRCTRL, scrubval, 0x001F); + f15h_select_dct(pvt, 1); + pci_write_bits32(pvt->F2, F15H_M60H_SCRCTRL, scrubval, 0x001F); + } else { + pci_write_bits32(pvt->F3, SCRCTRL, scrubval, 0x001F); + } if (scrubval) return scrubrates[i].bandwidth; @@ -217,11 +224,15 @@ static int set_scrub_rate(struct mem_ctl_info *mci, u32 bw) if (pvt->fam == 0xf) min_scrubrate = 0x0; - /* Erratum #505 */ - if (pvt->fam == 0x15 && pvt->model < 0x10) - f15h_select_dct(pvt, 0); + if (pvt->fam == 0x15) { + /* Erratum #505 */ + if (pvt->model < 0x10) + f15h_select_dct(pvt, 0); - return __set_scrub_rate(pvt->F3, bw, min_scrubrate); + if (pvt->model == 0x60) + min_scrubrate = 0x6; + } + return __set_scrub_rate(pvt, bw, min_scrubrate); } static int get_scrub_rate(struct mem_ctl_info *mci) @@ -230,11 +241,15 @@ static int get_scrub_rate(struct mem_ctl_info *mci) u32 scrubval = 0; int i, retval = -EINVAL; - /* Erratum #505 */ - if (pvt->fam == 0x15 && pvt->model < 0x10) - f15h_select_dct(pvt, 0); + if (pvt->fam == 0x15) { + /* Erratum #505 */ + if (pvt->model < 0x10) + f15h_select_dct(pvt, 0); - amd64_read_pci_cfg(pvt->F3, SCRCTRL, &scrubval); + if (pvt->model == 0x60) + amd64_read_pci_cfg(pvt->F2, F15H_M60H_SCRCTRL, &scrubval); + } else + amd64_read_pci_cfg(pvt->F3, SCRCTRL, &scrubval); scrubval = scrubval & 0x001F; diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index 4bdec752d330..971dc12a0a1c 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -255,6 +255,8 @@ #define DCT_SEL_HI 0x114 +#define F15H_M60H_SCRCTRL 0x1C8 + /* * Function 3 - Misc Control */ |